Hi! This is my first fanfiction ever and I'm super excited. I've been wanting to write something on these two for a while now and I finally did. Woohoo!

So these are the first 10 reasons and in the end they will all add up to 100. These are the reasons that Alec loves Magnus. The next chapter will be why Magnus loves Alec and so on.

One chapter down, 9 more to go!

Hope you enjoy!

Chapter 1

Make Me Laugh

In the living room, Magnus and Alec's laughter rang out around the loft. They laughed until their sides hurt and their legs went weak, causing them to fall onto the couch, still chuckling. After a couple of minutes they caught their breaths back, but when their eyes made contact, they were roaring with laughter again and they both fell off the couch at the same time and onto the floor.

"What were we even laughing about?" Alec asks when they stop chuckling.

"I have no idea," Magnus replied. It wasn't long until they were both laughing again.

Butterflies

Alec had always been familiar with the saying of getting butterflies in your stomach when you're around someone you like. He remembered Isabelle describing that's how she felt around her first crushes and boyfriends.

Before Alec met Magnus, he had never experienced that type of feeling before. Sure, he had got nervous, but never had he felt his stomach constrict and knot and feel like it would never settle.

The first time Alec spoke to Magnus in his loft after helping him defeat one of the enemies, Magnus made a terrible pun, then proceeded to turn around and introduce himself. And in that moment, Alec felt nothing but butterflies.

Reminding me of you

When he must stay overnight at the Institute, Alec spends the night looking around the familiar and yet almost alien room. The lampshade reminds him of his gorgeous black hair. The gold curtains and bedcovers remind him of his warlock mark, those enchanting cat eyes of his. The large bay windows remind him of the loft's windows and the magnificent views over Brooklyn. The glowing moon outside makes him wonder if he's staring at it too in his own bedroom. No matter where he looks, when he's parted from him, everything reminds Alec of Magnus.

Happy

"Why do you like Magnus?" Jace asks. It baffles him why Alec, a shy, reclusive Shadowhunter, would fall for a fun loving, quirky warlock. Alec frowns. Why wouldn't he like Magnus? He's charming, brave, loyal, honest and kind. He can dance, talk for hours about the exotic places he has been to. He is always there for him, he saves him, in more ways than one, and cheers him up at his darkest moments, but most of all…

"He makes me happy." Alec answers smiling.

What's wrong?

He doesn't have to say a word and yet he can know from his actions that something is wrong. Alec was in the Ops room, his eyes staring off into space, trying to straighten out some of the plans for him and Lydia's wedding. He didn't even notice the approaching warlock who stops near him and proceeds to ask, "What's wrong?"

Alec pauses, staring at him, a small smile pulling at his lips.

"How could you know that something was bothering me?" he wonders in his head.

"There's nothing wrong, I'm fine." He lies. As Alec watches Magnus walk away, the smile doesn't return. How was he supposed to tell him that the barriers surrounding his heart were crumbling because of him?

Not afraid to dance

The night of Jocelyn and Luke's wedding, there was a large reception where Shadowhunters and Downworlders alike were invited to attend. Alec and Magnus had been dancing to a few upbeat songs, when suddenly, it switched to a slow dance. Alec briefly thought he and Magnus would skip this dance, but when the warlock took his hand, their fingers entwined and Alec realised he wasn't afraid to dance with him. Together they waltzed around the dance floor in their own world as other couples danced with their own partners.

Fairy tales

"And the prince and the princess go married and lived happily ever after. The end," Alec closed the book and saw that Madzie had fallen asleep. He smiled and stood to leave. Magnus, who had been sitting on the chair in the corner, got to his feet and walked toward the bed. He placed a gentle kiss on the young girl's forehead.

"Good night, sweet pea."

As the couple exited the room, Alec whispered, "I wish life was more like a fairytale sometimes."

"It already is Alexander." Magnus replied.

"How so?" Alec asked.

"We met, fell in love, went on adventures, admittedly announced we love each other and are now living happily ever after here in the loft with Madzie," explained Magnus.

A large grin appeared on Alec's face.

Lie on me

Alec knows perfectly well that Magnus could sleep in his bed in the afternoons when he feels like taking a rehydrating nap. It's definitely softer than him. However, Magnus insists on lying on Alec. He'll catch him off guard by pinning him to the sofa and lying across his chest, and will quickly fall asleep.

Alec knows perfectly well that he could pick him up, lay him down somewhere more comfortable, and go about his day, but every time he sees him sleeping, he's unable to move. He enjoys gazing at his boyfriend, so peaceful and calm, trusting him to look after him in such vulnerable state.

Alec knows perfectly well that he enjoys these moments as much as Magnus does.

Always on my mind

In the day he's thinking about him and during the night he's dreaming of him. He knows he's in love because Magnus is always on his mind. He can't get him out of his head, he thinks about kissing his lips, running his hands through his hair, holding him in a tight embrace, whispering sweet nothings in his ear and telling him that he is the most stunning being he has ever come met.

He feels Magnus's arms wrap around his neck as he plants a kiss on his cheek.

"What are you thinking about Alexander?"

"You," Alec answers.

Reliability

Alec believes that a relationship is like a seesaw as you need two people to work it. At first, he was alone. His feet were planted firmly on the ground, his brown eyes staring at the empty space in the air, with no one to help her work the seesaw. But when he met Magnus, the empty space was filled, and Alec was able to rise to the sky as Magnus lowered to the ground. Alec can always count on Magnus being there for him now, to cheer him up, to talk to him, to hug him and to work the hypothetical seesaw together.

So what do you think? Review and let me know.

Also, I'll be updating every week so watch this space ;)

A.O.D